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Serving Santa Clarita + 20 miles and Orange County from Tustin to San Clemente
Maintenance & Tune-Ups in Santa Clarita & Surrounding Areas
Seasonal HVAC maintenance for homes and light commercial buildings.
What we offer
What is included
Coil cleaning and inspection
Capacitor and electrical tests
Refrigerant pressure check
Drain line flush
Furnace burner and flame sensor service
Carbon monoxide test
Before you call
Quick checks you can do yourself
- Set the thermostat to Cool and at least 3 degrees below room temperature. Replace thermostat batteries if the screen is blank or dim.
- Pull the air filter and hold it up to light. If you cannot see light through it, replace it.
- Check your main electrical panel for a tripped AC or condenser breaker. Reset it once. If it trips again, leave it off and call.
- Make sure the outdoor disconnect switch near the condenser is in the On position.
- Clear leaves, weeds, and debris at least 2 feet around the outdoor unit and gently rinse the fins with a garden hose from the outside in, with the power off at the disconnect.
- Go outside while the system runs and listen. If the fan is not spinning or the unit only hums, turn the AC off to protect the compressor.
Still not working? Call (323) 240-2373 or tap "Call me back". Do not open electrical panels or touch gas parts.
Troubleshooting guides
Common problems, explained
Troubleshooting
AC Blowing Warm Air? 7 Causes and What to Do
An AC that blows warm air is most often caused by a wrong thermostat setting, a clogged air filter, a tripped breaker for the outdoor unit, or a dirty outdoor coil. If those check out, the likely cause is a failed capacitor or contactor, or a refrigerant leak, and those need a licensed technician.
Read the guideTroubleshooting
AC Frozen? Ice on the Lines or Coil: Causes and Fixes
An AC freezes when the indoor coil gets too cold, usually from low airflow (dirty filter, closed vents, weak blower) or low refrigerant from a leak. Turn cooling off and run only the fan to thaw it, replace the filter, and if it freezes again, call a technician to check airflow and refrigerant.
Read the guideTroubleshooting
AC Leaking Water Inside the House? Causes and Fixes
An AC leaking water indoors is usually caused by a clogged condensate drain line, a cracked or rusted drain pan, or a frozen coil that is melting. Turn the system off, check the drain line and float switch, and call a technician if the pan is damaged or the leak continues.
Read the guideTroubleshooting
AC Outdoor Unit Humming but Fan Not Spinning? Causes
When the outdoor unit hums but the fan does not spin, the most likely cause is a failed run capacitor, followed by a seized fan motor or a stuck contactor. Turn the AC off right away to protect the compressor, clear any debris, and call a technician, because capacitors hold a dangerous charge even with the power off.
Read the guideTroubleshooting
Furnace Turns On Then Shuts Off? Short Cycling Causes
A furnace that turns on and shuts off quickly is short cycling, usually because of a clogged filter causing overheating, a dirty flame sensor, a blocked vent or intake, or a thermostat problem. Replace the filter and check the thermostat first. If it keeps cycling, a technician should check the safety switches and venting.
Read the guideTroubleshooting
Heat Pump Blowing Cold Air in Heat Mode? Causes
A heat pump that blows cool air in heat mode may simply be in defrost mode, which is normal and lasts a few minutes. If it blows cold air for a long time, check the thermostat mode and filter, then call a technician for possible reversing valve, defrost control, or refrigerant leak problems.
Read the guideMaintenance & Tune-Ups in Santa Clarita & Orange County
WY&G, Inc. provides maintenance & tune-ups for homes and light commercial buildings in Santa Clarita, Valencia, Saugus, Canyon Country, Newhall, Stevenson Ranch, Castaic and the north San Fernando Valley, and across Orange County from Tustin and Irvine to San Clemente. Spring AC and fall furnace tune-ups that catch problems before the worst day of the year. Every visit starts with a diagnostic and a written price, and our licensed technicians (CSLB C-20 #1044922) explain what they found in plain language.
Maintenance & Tune-Ups by city
Stages
Maintenance & Tune-Ups: how it works, step by step
Simple, clear and on your schedule.
Submit a requestStage 1
01Request
You call or send a request. We confirm the problem and set a time, usually the same day.

Stage 2
02On-site visit
The technician tests the system: electrical, refrigerant or gas, airflow and drain.

Stage 3
03Written estimate
You get a written diagnosis and price before any work starts.

Stage 4
04Service
We repair with quality parts and keep the work area clean.

Stage 5
05Support
We test performance, explain what we found and how to avoid it next time.

Tip
Common problems and what they mean
Before summer
Weak capacitors fail on the first 100 degree day.
Before winter
Dirty flame sensors fail on the first cold morning.
After smoke season
Filters and coils load up fast.
Keeping warranty valid
Many manufacturers expect regular service.
Pro tip
Twice a year is ideal in our climate: AC in spring, furnace in fall.
Related
More maintenance & 24/7 services
Reviews
Reviews from our customers
WY&G is very reliable and professional. They were assigned by the warranty company and did excellent work. Same day fixed the problem and finished the work. Strongly recommends WY&G Inc for all AC repair or regular maintenance work for HVAC.
Canyon Country, CAWe’re very happy with WY&G services. We had our old heater & AC replaced in our unit. The tech guys are professional and provide high quality services. Definitely recommend if you want to upgrade your system. The crew worked smoothly and cleaned up after work.
Studio City, CAI don’t have enough good things to say about WY&G. They are professional, fast, and do quality work. I had a lengthy issue that required working with a home warranty and manufacturer’s warranty that WY&G was able to help me resolve. They are great with communicating and always called me back promptly. I will definitely be using them again.
Sherman Oaks, CAFAQ
Frequently asked questions
How long does a tune-up take?+
About an hour per system.
Do you service commercial buildings?+
Yes, light commercial.
Do you offer maintenance plans?+
Ask us; we can schedule both seasons for you.
Will you tell me if something is failing?+
Yes, with photos and a written note.
Licensed, insured C-20 HVAC contractor
All major brands
Our own team, no middlemen
Written price before work begins
Help with home warranty claims
Support after every repair and install
Consultation
Get a free quote and consultation
Send a quick request and we will call you back fast.
- A clear written estimate
- Help choosing the right system
- Straight answers to your questions


